摘要
The layered van der Waals antiferromagnetic Fe PS_(3) has received considerable attention because long range magnetic ordering can remain with single atoms layer,which offers potential applications in future ultrathin devices.Here,we perform Raman spectroscopy to systematically explore the variations of lattice vibration and crystal structure under pressure up to 18.9 GPa.We observe two structural phase transitions at approximately 4 GPa and 13 GPa,respectively.Moreover,by monitoring spin-related Raman modes,we demonstrate a pressure-induced magnetic structure transition above 2 GPa.These modes disappear accompanying the second structural phase transition and insulator-to-metal transition(IMT),indicating the suppression of long-range magnetic ordering,in agreement with earlier neutron powder diffraction experiments.
作者
Hong Zeng
Tingting Ye
Peng Cheng
Deyuan Yao
Junfeng Ding
曾鸿;叶婷婷;程鹏;姚德元;丁俊峰(Key Laboratory of Materials Physics,Institute of Solid State Physics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.52002372,12004387,51672279,51727806,11874361,and 11774354))
Science Challenge Project(Grant No.TZ2016001)
the CASHIPS Director’s Fund(Grant No.YZJJ201705)。
